Amido Black 10B is an organic sodium salt resulting from the formal condensation of Amido Black 10B (acid form) with two equivalents of sodium hydroxide.
Definition
Amido Black 10B is an organic sodium salt resulting from the formal condensation of Amido Black 10B (acid form) with two equivalents of sodium hydroxide. It has a role as a histological dye. It contains a 4-amino-5-hydroxy-3-[(p-nitrophenyl)azo]-6-(phenylazo)-naphthalene-2,7-disulfonate.
Source: PubChem
US FDA substance register · UNII 9YWS9G6WTF · registered name Nigrosine WS · single chemical substance
CI 50420 is classed chemically as a sulfonated nigrosine colour.
Cosmetic roles
Safety & regulatory references
- Banned
- Argentina · ASEAN · Brazil · European Union · United Kingdom
- Restricted or banned
- Argentina · ASEAN · Brazil · China · European Union · Taiwan
- Allowed colourant
- ASEAN · Taiwan
Source: ASEAN Cosmetic Directive · EU Cosmetics Regulation · MFDS (Korea) cosmetic regulatory information · UK cosmetics regulations (OPSS) · Taiwan FDA cosmetic ingredients
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
EU Cosmetics Regulation, Annex IV (allowed colourants), entry 84 · maximum concentration Not to be used in products applied on the mucous membranes
Source: EU allowed colourants (Annex IV)
EU Cosmetics Regulation, Annex II (prohibited substances), entry 1359
Restriction IV/84 (CI 50420) II/1359 (CI 50420: when used as a substance in hair dye products) · Other restriction: ban substances that deplete the ozone layer
Source: EU CosIng ingredient list
More data — names, identifiers, properties, test records, literature
Names & identifiers
- CAS No.chemical registry number
- 8005-03-6
- DTXSIDUS EPA chemical ID
- DTXSID1020934
- DTXCIDUS EPA compound ID
- DTXCID701437065
- IUPAC
- Disodium (3E)-5-amino-6-[(E)-(4-nitrophenyl)diazenyl]-4-oxo-3-(2-phenylhydrazinylidene)-3,4-dihydronaphthalene-2,7-disulfonate
- Molecular formula
- C22H14N6Na2O9S2
- Molecular weight
- 616.49 g/mol
Measured properties
- Appearance
- A group of dark blue or black dyes, [Hawley] Black powder, [MSDSonline] There are water-soluble, ethanol-soluble, and fat-soluble nigrosines, [Ullmann] · liquid
- Solubility
- SOME SOL IN WATER, ALC, OIL /NIGROSINES/
- Odour
- odourless
- Melting/freezing point
- 0 ℃
- Initial boiling point and range
- 100 ℃
- Vapour pressure
- 14 ㎜Hg (at 16 C)
- Relative density
- 1.0
Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.
Source: PubChem · KOSHA safety data sheets (Korea)
What products actually use it for
What the 10 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.
- Dye9
- Pigment1
Source: US EPA CompTox dashboard
Linked databases 18
- ASEAN Cosmetic Directive
- Australian Industrial Chemicals Inventory (AICIS)
- China inventory of existing ingredients (IECIC)
- EU allowed colourants (Annex IV)
- EU CosIng ingredient list 2
- EU Cosmetics Regulation
- EU prohibited substances (Annex II)
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic regulatory information 2 3 4
- PubChem 2
- Taiwan FDA cosmetic ingredients
- UK cosmetics regulations (OPSS)
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata